Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2458ff6c0fff77…

MALICIOUS

PDF

73.1 KB Created: 2021-02-15 13:31:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f15791375761d9c81da63b36c34f4092 SHA-1: 20e0f0c3050adce677a6f55e0fe9e17941da9d78 SHA-256: ce2458ff6c0fff777ff63fe2e129ce6dbe8920acc3dd8dd48e4b1608dcd1b05f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/aws?utm_term=easy+duplicate+finder+key+generator In PDF document text
    • http://japancar-sib.ru/796269629740vdh4.pdfIn PDF document text
    • http://pay-order.info/abcd_full_movie_in_hindi_download7j0su.pdfIn PDF document text
    • http://rodina38.ru/cognos_bi_report_studio_training5fns8.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/hdiiijh/cach_hack_vang_game_yong_heroes.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/2yX8Kow/stickers_whatsapp_memes_descargar_gratis.pdfIn PDF document text
    • http://bigojojodun.iblogger.org/riremurigeba.pdfIn PDF document text
    • http://options.expert/seattle_news_reportersdcrld.pdfIn PDF document text
    • http://laulu-go.ru/aaru_tamil_songs_123musiqrf510.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/hF9Rq8C/kezopofajebumaliban.pdfIn PDF document text
    • http://luminar2-download.xyz/keriredepabufyiuf.pdfIn PDF document text
    • http://rusakova.space/kowawugabesebumedy79s.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/igEYGjj/66495613539.pdfIn PDF document text
    • http://nizagose.66ghz.com/xolubomuteted.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/79gcejj/xbox_one_games_on_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gegokuberil.rf.gd/jaraxir.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6F 5444 bytes
SHA-256: 051a1ec1e48bb8b00e9a1d81629d5d68c8a8957d461c5dd426c1c2b4c169b067
font_01_sfnt_off0000f21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21A 11020 bytes
SHA-256: d0445872b72ba67a3e40bcb29c01a3d5a10c0944aa5468f80c053ea0e833b31c